package org.alex.samples.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.alex.samples.model.ExamRole;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class LoginInterceptor implements HandlerInterceptor {

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object object) throws Exception {
		HttpSession session = request.getSession();
		ExamRole examRole = (ExamRole) session.getAttribute("user");
		if (examRole != null) {
			return true;
		} else {
			response.sendRedirect(request.getContextPath() + "/login");
		}
		System.out.println("--------------preHandle------------------------");
		return false;
		
	}

	
	
}
